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3db495e4d7
Add a patch from the Alpine Linux project [1] to fix a musl build issue with
gcc 5:
```
error: temporary of non-literal type ‘pthread_mutex_t’ in a constant expression
constexpr PosixMutex():mutex(PTHREAD_MUTEX_INITIALIZER) {}
```
Problem has been reported by the Alpine team upstream and was closed by the MPD
maintainer with WONTFIX:
http://bugs.musicpd.org/view.php?id=4387
http://bugs.musicpd.org/view.php?id=4110
However...
POSIX does not permit using PTHREAD_COND_INITIALIZER except for static
initialization, and certainly does not permit using it as a value.
Also POSIX does not specify the type of the object (it's opaque) so if
there are any types for which their code would be invalid C++, then their
code is invalid.
Also, volatile in the type is necessary. without that, LTO can break the code.
[1]
http://git.alpinelinux.org/cgit/aports/log/main/mpd/musl-gcc5-fixes.patch
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
57 lines
1.5 KiB
Diff
57 lines
1.5 KiB
Diff
musl gcc5 fixes
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Fetch from:
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http://git.alpinelinux.org/cgit/aports/plain/main/mpd/musl-gcc5-fixes.patch
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Problem has been reported upstream and closed with WONTFIX:
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http://bugs.musicpd.org/view.php?id=4387
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http://bugs.musicpd.org/view.php?id=4110
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however...
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POSIX does not permit using PTHREAD_COND_INITIALIZER except for static
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initialization, and certainly does not permit using it as a value
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also POSIX does not specify the type of the object (it's opaque) so if
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there are any types for which their code would be invalid C++, then their
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code is invalid
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also, volatile in the type is necessary. without that, LTO can break the code.
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Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
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--- ./src/notify.hxx.orig
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+++ ./src/notify.hxx
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@@ -28,7 +28,7 @@
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Cond cond;
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bool pending;
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-#if !defined(WIN32) && !defined(__NetBSD__) && !defined(__BIONIC__)
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+#if defined(__GLIBC__)
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constexpr
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#endif
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notify():pending(false) {}
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--- ./src/thread/PosixCond.hxx.orig
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+++ ./src/thread/PosixCond.hxx
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@@ -41,7 +41,7 @@
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pthread_cond_t cond;
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public:
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-#if defined(__NetBSD__) || defined(__BIONIC__)
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+#if !defined(__GLIBC__)
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/* NetBSD's PTHREAD_COND_INITIALIZER is not compatible with
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"constexpr" */
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PosixCond() {
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--- ./src/thread/PosixMutex.hxx.orig
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+++ ./src/thread/PosixMutex.hxx
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@@ -41,7 +41,7 @@
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pthread_mutex_t mutex;
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public:
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-#if defined(__NetBSD__) || defined(__BIONIC__)
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+#if !defined(__GLIBC__)
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/* NetBSD's PTHREAD_MUTEX_INITIALIZER is not compatible with
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"constexpr" */
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PosixMutex() {
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